Perhaps you should try some spelling variations:
"by computation using locking problem" » "by computations using locking problem" (Expand search), "by computation in locking problem" (Expand search), "by composition using locking problem" (Expand search), "by computation using docking problem" (Expand search), "by computation using packing problem" (Expand search), "by computation using loading problem" (Expand search), "by computational using locking problem" (Expand search), "of computation using locking problem" (Expand search), "_ computation using locking problem" (Expand search), "by computation using stacking problem" (Expand search), "by computation using tracking problem" (Expand search), "by computation swing blocking problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation using locking problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( by computation using locking problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computation using locking problem") OR ("using python python python programming"))*.